LIFESCI 2 Lecture Notes - Lecture 6: Vascular Bundle, Monocotyledon, Leaf
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Heterotrophs vs. autotrophs: troph = energy, autotrophs b. i. Make organic molecules (carbohydrates, proteins, lipids) from inorganic molecules (co2 & h2o) b. iii. Calling co2 inorganic because it"s unusable by most organisms b. iv. Photoautotrophs: use light energy to do this b. iv. 1. Include plants & some prokaryotes b. v. chemoautotrophs: use chemical energy, especially that of oxidation b. v. 1. They oxidize some other molecule to make energy b. v. 2. Various prokaryotes for the most part: heterotrophs c. i. Oxygen from splitting water: water that goes in and comes out aren"t the same, trace the oxygen in the water, co2 is split and both parts go into the sugar, and its oxygen goes into water. In some photoautotrophs (specifically prokaryotes called cyanobacteria) have it on surface of their cells: chloroplasts are similar to mitochondria c. i. Double membrane structure with similar machinery attached c. iii. Chloroplasts & mitochondria are probably an endosymbiotic relationship in eukaryotes with cyanobacteria: 2 membranes d. i.
